Frankfurter roll slitting machine



Oct. 27, 1936. Q HOBES ET AL 2,059,108

FRANKFURTER ROLL SLIT'IING MACHINE Filed Dec. 17, 1934 sheets-sheet@ IMUY .lill

Ot. 27, 1936. 1 G. HoBBs ET Al.

' FRANKFURTER ROLL smTTlNG MACHINE 2 'sheets-sheet 2 Filed Deo. 17,"1954 im v 0 .w1\ w m L 32m/wapa@ 5 n wf?. Cgep/50% Patented Oct. 27,1936 FRANKFURTER ROLL SLITTING MACHINE Laurence G. Hobbs and Knut J.Cederholm,

Fitchburg, Mass.

Application December 17, 1934, Serial No. 757,844

6 Claims.

This invention relates to the slitting of ordinary frankfurter rolls orother pastry and also to the slitting of specially formed rolls whichare baked u with a longitudinal recess in each roll `for the =v-`reception of the frankfurter or Ythe like.`

The principal objects of this invention are to provide a. simple andconvenient machine for splitting a series of rolls or the like nearlythrough Y'nso that the consumer can separate them from 'each other; toprovide means for splitting the outside crust from a loaf or strip ofrolls and to divide such a strip into two parts; to provide simple andeffective means for holding a Vspecially n formed' loaf in` properrelation to the cutters during the splitting operation; to provide meansfor guiding the specially formed rolls through the slitting machine bymeans of recesses formed in the bottom of the loaf in the act of bakingit, and to provide individual knives for splitting each 26' roll of theordinary type down the back to provide the opening into which thesausage or other iilling is to be placed.

Other objects and advantages of the invention Will appear hereinafter.

Reference is to be had to the accompanying imdrawings, in which Fig. 1is a side view of a machine constructed in accordance with thisinvention for use in'slit` ting the specially formed' rolls with arecess;

Fig. 2 is a plan thereof; Fig. 3 is a sectional View of the table forsupporting the rolls, the means for holding themv down, and the slittingknives;

Fig. 4 is an enlarged sectional viewY of part of a 35 loaf showing itscondition as it leaves the machine ready for the market; Y

Fig. 5 is a plan of a modified form of discharge table;

Fig. 6 is a sectional view thereof on the line 403 5 6 of Fig. 5;

Fig. '7 is a View similar to Fig. 3 showing the application of aslightly modified `form of the machine to an ordinary roll, and

Fig. a is a. View similar to Fig. 4 showing the 4.5i ordinary loaf readyfor themarket.

There is now on the market a frankfurter roll comprising originally aset of twelve, or any other number of rolls, baked in one strip or loafand provided with recesses I0 in the bottom into which 50 thefrankfurter is placed when the sandwich is served. 'Ihe first threeiigures show a machine for slitting such a loaf so that it can beseparated into individual rolls and so that a baked strip of a dozenrolls can be split in half and the ends 55 trimmed.

(Cl. 14S-98) The machine is shownin a form in which it comprises.stamped steel legs II carriyng a table I3 on `which the loaf previouslybaked is placed. The loaf is put on this table after it is baked inorder to be slit, asshown inFig. 4. Y

The table is provided with two T slots i2 in which a motor I5 isadjustably mounted to main` tain the belt tension- `By a belt I6 :themotor drives a shaft I1. This shaft is mounted in'v bear# ings I8carried by a cap secured tothe frame. The cap is hinged at I4 in such amanner that by removing one nut at each end, the cap swings on 'thehinge pin so that the whole assembly canl be dropped down and removedfrom the bottom. The bushings in which the shaft runs are flangedaroundthe sides of thev bearing and are removed with the shaft.

On the shaft are mounted a series of blocks secured in position by a nut2| screwed on by screw-threads carried by the shaft. v These blockscarry between them a series of slitters 22 spaced' equally apart 'by theblocks, and'held in fixed position when the blocks are tightened up bythe nut. There is also a pair of end slitters 23 at the ends of theseries for the purpose of cutting off the outer crust .I9 at the twoends of the loaf, and

a central slitter 23.

The table I3 is provided with slots 24 for receiving the two kinds ofslittersi On the table between eachltwo adjacentslitters is integrallymounted a guide 25 normally. fitting the recesses l!) above mentioned.In this 'way a strip of rolls., preferably twelve inV length, can belocated on the guides and pushed upto a position in which they engagethe rotating knives or slitters. They rotate in a direction to assist inmoving the strip or loaf of rolls through the machine. The guides areslanted ofi? at the entrance end, as shown in Fig. 1. y

Centrally above the end guides 25 are .guide stops 26 mounted on a plate2l to hold the rolls drown. This plate is secured to the main frameorvtable` adjustably by vstuds 28 so that their height may be changed toget them exactly right forzthe particular rolls beingA operated upon orfor different sized rol-1s., This plate'21`also fur'- nishes a springguide 30 which projects upward`- ly to assist in guiding the rolls intoa position for being slit and preventing them from rising at this pointbefore they enter the slitting part of the machine. A curved guard SIfor the center slitter may be applied to the top of the plate 2l. Chutes32 are provided for directing the crumbs into a waste receptacle 33.

In order to retard the speed of the rolls on the discharge side there isa hinged flap 34. This of course is held down by gravity, and the amountof engagement with the discharge rolls is adjusted by means of adjustingstuds 3l operating against levers 36. The combined hold-down and guardis attached to the table proper by means of the four studs 28. Thisarrangement allows a screw adjustment on the height of the holddown. Inthis form of the invention the dis-.

charge table is made in the form of a hinged leaf 29 which folds downwhen not in use.

In the form shown in Figs. 5 and 6, the rolls, split into sections ofsix, are brought out at the end of the machine. Here six 'of them haveno support and they drop through a space at 3,8 a distance slightlygreater then their height on a discharge table 39. Then the other sixare slid laterally over the same space 38 and'on top of the first six.This greatly facilitates the handling of the product.

In the form of the invention shown in Figs. '7 and 8, the machine isarranged to slit ordinary frankfurter rolls, which are not preparedpreviously by a recess in the baking. In dispensing this type of rollthe usual procedure is to cut the individual roll part way through witha knife and spread the two sides apart. This leaves a longitudinalopeningk in which the frankfurter or other filling is inserted.

In order to arrange this machine for slitting a loaf made up of saytwelve rolls of the ordinary kind, it is prepared as described aboveexcept for the recess. It has the excess material at each end. Accordingto Fig. 7 the two ends are trimmed off and the loaf is divided in two bythree rotary disc knives 23 just as before. These knives cut all the waythrough the roll as in the first case. 'Ihe knives 22 are also usedgoing almost all the way through the loaf so that the loaf can bedivided easily into twelve rolls by the consumer. In addition to this athird set of knives 35 are employed intermediate between the knives 22and they slit the roll down the back to enable the user to spread eachroll apart down the middle in order to receive a frankfurter. Theseknives 35 therefore are of less diameter than the knives 22.

In this case the loaf is drawn through the machine without theemployment of the guides 25 as they are not used. The two half loaveseach containing six rolls are discharged from the machine in the sameway as described above.

In both cases the end slitting knives 23 are employed for the purpose ofremoving the end crusts so that all the rolls will be alike. In this waya loaf consisting of a dozen rolls may be packed in a single length andslit into two sections of a half dozen each formed as shown in Fig. 4 inone case and in Fig. 8 in the other. They are conveniently delivered, ahalf dozen on top of another half dozen. The customer merely has toseparate or spread the bread on each side of the recess l0 or on eachside of the out produced by the knives 35 for the reception of thefrankfurter. The rolls are separated from each other individually in avery simple manner as above referred to.

2. In a machine for slitting bakery products,

having 'parallel recesses in the bottoms thereof, into individualpieces, the combination of a shaft, a series ofparallel slitters on theshaft, a table having perforations therethrough for receiving theslitters, and a series of guides, one between -each two slitters,receiving the recesses in the bottom of each bakery product and guidingthe 20 same past the slitters.

3. In a machine for slitting bakery products, the combination of arotary shaft, a series of circular slitting knives carried by the shaft,a table for supporting the bakery products, said table having a seriesof parallel guides for entering 25 each bakery product to guide ittoward the knives, and adjustable plates above said guides engaging andholding the product in contact with the table.

4. In a machine for slitting bakery products 30 having parallel recessesin the bottoms thereof into individual pieces, the combination of ashaft, a series of parallel disc slitters on the shaft, a table havingperforations therethrough for receiving the slitters and provided with aseries of guides, one between each two slitters entering the recesses ineach bakery product and guiding the same past the slitters, and meansfor rotating the slitters in a direction to draw the product throughthem and along the guides.

5. In a machine for slitting bakery products, the combination of arotary shaft, a series of circular slitting knives carried by the shaft,a table for supporting the bakery products, said table having a seriesof parallel guides entering recesses in a surface of the bakery productto guide it toward the knives, and a plate located above the guides anddiverging therefrom to guide the product and hold'it down until itencounters the slitter.

6. In a machine for slitting a loaf into a plurality of rolls, thecombination with a series of rotary cutters having a larger cutter alongthem for slitting the loaf into two parts, of a table in position toreceive the two parts from the slitting means, said table having a spaceso located that one of said parts of the loaf will fall through it, anda discharge table below the first named table a distance equal to theheight of the loaf for receiving said part of the loaf, whereby theother part of the loaf may be moved along the first named tablelaterally to rest on the first named part of the loaf.

' LAURENCE G. HOBBS. KNUT J. CEDERHOLM.

